RT Journal Article
T1 Ghost-gluon coupling, power corrections, and ^MS¯¯¯¯¯ from lattice QCD with a dynamical charm
A1 de Soto, Feliciano
A1 Blossier, B.
A1 Boucaud, P.
A1 Brinet, M.
A1 Du, X.
A1 Gravina, M.
A1 Morenas, V.
A1 Pène, O.
A1 Petrov, K.
A1 Rodríguez-Quintero, J.
K1 Ghost-gluon coupling
K1 Lattice
AB This paper is a first report on the determination of ^MS¯¯¯¯¯¯ from lattice simulations with 2+1+1 twisted-mass dynamical flavors via the computation of the ghost-gluon coupling renormalized in the MOM Taylor scheme. We show this approach allows a very good control of the lattice artefacts and confirm the picture from previous works with quenched and Nf=2 twisted-mass field configurations, which prove the necessity to include nonperturbative power corrections in the description of the running. We provide an estimate of ¿MS¯¯¯¯¯¯ in very good agreement with experimental results. To our knowledge, it is the first calculation with a dynamical charm quark which makes the running up to ¿s(MZ) much safer.
PB American Physical Society
SN 1550-7998
YR 2012
FD 2012-02
LK http://hdl.handle.net/10433/1000
UL http://hdl.handle.net/10433/1000
LA en
NO Physical Review D - Particles, Fields, Gravitation and Cosmology, 85 (3), art. no. 034503
NO Universidad Pablo de Olavide. Departamento de Sistemas Físicos, Químicos y Naturales
DS RIO
RD May 8, 2026